SAMI GS cable lengths given in Table 5-2 are exceed- ed for types ACS 501-004...011-3 or ACS 501- 005...016-5, the output choke should be used. mum available torque. If noise problems ex- ist, contact ABB for more detailed information. Note! To avoid interference problems in control cables all the cabling should be screened and should not run parallel to the motor cables (see page 20 for minimum dis- tances). 5.3 Insulation Checks Note! Insulation checks must be performed before connecting the SAMI to the mains. Before proceeding with the insulation resist- ance measurements make sure that the SAMI is disconnected from the mains. B 1.
Check that the motor cable is discon- nected from the SAMI output on terminals U 2 , V 2 and W 2 . 2. Check that the motor cable is discon- nected from the motor and remove bridg- ing connections at the motor. IP 21 types: ACS 501-016...060-3, ACS 501-020...070-5 and all types as IP 54 construction, except ACS 501-009-3, 011-3, 011-5 and 016-5. A 3. Measure the insulation resistances from the motor. The voltage range of the insulation resistance meter must be at least equal to the mains voltage, but not exceeding 1000 V. The insulation resist- ance must be greater than 1 M Ω . 4.
Measure the insulation resistance of the motor cable between the phases and between each phase and Protective Earth. The insulation resistance must be greater than 1 M Ω . 5.4 Terminal Connections To connect the power, motor and control cables, remove the front cover of the unit by removing the four screws at the corners of the cover. Then remove the front part of the cable entry insulator by removing the screws (A) at the ends of the insulator. Remove the protective caps of the cable entry holes using a knife or a screwdriver. IP 54 types: ACS 501-009-3, 011-3, 011-5 and 016-5.
B In order to make the cable installation easier, the cable entry insulator can be removed as one piece by unscrewing the screws (B) and pulling the insulator off the frame. Figure 5-1. Installation of the cable entry insulator. B A 17